﻿ When a ray of light enters a glass slab from air: : Kaysons Education

# When A Ray Of Light Enters A Glass Slab From Air:

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## Question

### Solution

Correct option is

Its wavelength decreases

. On refraction V does not change and velocity decreases. So, λ also decreases.

#### SIMILAR QUESTIONS

Q1

How many images of himself does an observer see if two adjacent walls and the ceiling of a rectangular room are mirror surfaced?

Q2

A clock hung on a wall has marks instead of numerals on its dial. On the adjoining wall, there is a plane mirror and the image of the clock in the mirror indicated the time 7.10. Then the time on the clock is:

Q3

Mirage is a phenomenon due to:

Q4

A plane glass slab is kept over various coloured letters; the letter which appears least raised is:

Q5

A ray of light from a denser medium strikes a rarer medium at an angle of incidence i. If the angle of reflection is r and the angle of refraction is r’and reflected and refracted rays make an angle of 90o with each other, then the critical angle will be:

Q6

The wavelength of light diminishes μ times in the medium. A diver from inside water (μ = 1.33) looks at an object whose natural colour is green. He sees the object as:

Q7

Air has refraction index of 1.0003. The thickness of air column, which will have one more wavelength of yellow light (6000 Å) than in the same thickness of vacuum is:

Q8

A ray of light travelling inside a rectangular glass block of refractive index  is incident on the glass-air interface at an angle of incidence of 45o. The refractive index of air is one. Under these conditions the ray:

Q9

The critical angle of for light going from medium x into medium y is θ. The speed of light in medium x is v. The speed of light in medium y is: